add pyvis to app.py

app.py

@@ -1,5 +1,6 @@
 import os
 import networkx as nx
+import pyvis
 from smolagents import CodeAgent, HfApiModel, tool, GradioUI
 
 # Define a tool for analyzing the Florentine Families graph
@@ -35,7 +36,7 @@ model = HfApiModel()
 agent = CodeAgent(
     tools=[analyze_florentine_graph],
     model=model,
-    additional_authorized_imports=["networkx"],
+    additional_authorized_imports=["networkx","pyvis"],
     add_base_tools=True
 )